1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f9cfe2c4ac494a0ce0778290b8fef2121528ddd3c338fde19d8c8dfc5c5daf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff71718a-2f87-4393-ad36-9ee8ff442568.json and https://artists.proofprofile.net/proofs/artist/ff71718a-2f87-4393-ad36-9ee8ff442568.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfdc60b5e8a50ad7b57725ccfaecc0a4657acd63a8076078d377c6eb91fcbc4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92089878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad7aad168165125c2f6144e623e3dac67f3b43224b07903fbb9c54b057d80aa. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5AB1943744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f47f295ae5c34d453ce3d46a7c2ace27a0da260f7d5ef18099e1ddab89abef. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US7VG1861430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b10ce156e1e9fe925766c7bef845fdf8cc4ae78c7bc17ded9f485732b5ea0b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGLS1985446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af59a5d4f1a5920f5f612703ddd1f4c18fb8d980b297220858912b574c37915. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHZ32052155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698cab8cdbae8f85598f4ba8f2abef2e232bdaf71c387d2c110592a5abdffe2d. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fae359b6adbfcdaf1cecdc29338e5818b0b985b3a186d2526d479311334c875. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381e488f3daa3f6ca2fdda6414344204fef343936d37ecf70956f948a36db267. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5197a10f4a835e928ad499ebbf07ad78eb56bba966166ef788bc4e3df67eda34. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0d7a9cb32ca0e1c08280e12f83864b42d518d7aec9c9255f0a58ef4bc58c48. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c138599a49a6769f7a2249763b935cf085755b03e7c12d2315dc31e7d14e5b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365b416d66e4a98b8a9b0c3058c6c8cc69d4ee759081d94364f941b52f208fc4. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bd0c8ffb0ab0ccfef6a1fa8ff1e12f8a80d2cbb49b0cb3c1f7c020d6694db3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:29:55Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd1f68277b9d9b2779df2802c23b11eb0dd0a579cdac5eb7be4abf07e985500. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98c1ab1f9c2010b0dd153ca0efeb1273e7e46e17ae52b09a6d0d7edc884f0a0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2b1c1d978bf94457ba8f7b409555ab9459911e929001048948a339f141285d. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:10:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bdcf730f7b272b8a6a0d3f70b90b3c694b1d5a7cd52246ca74cb8f50c92f5e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:53:54Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7575bf79ecaa5bd5f30830f303cb20e38ff38c34845b69e106256c2e1409c0eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365b416d66e4a98b8a9b0c3058c6c8cc69d4ee759081d94364f941b52f208fc4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bd0c8ffb0ab0ccfef6a1fa8ff1e12f8a80d2cbb49b0cb3c1f7c020d6694db3. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd7308826938a7fcc426f8e17655f7c9a6061b7580a395c4c504899badf49bf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cb3696dae809375775211b50ae64cfff897617c7944aab5cc3108b67e8acdb. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e611145d84461e912dc57f4196112a9ba93a573a9767df0b7db1c712ca0c4d2. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5f23a715f710fca616c0a36db3ef43a1416405266ecea2828cfcff23d54883. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:43:36Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd370af7f008aab09dc5e28950ce23eb66cf7c3ddab8b2fa9eea2be27f34e6f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e31da422bd0ac739e1c7f5288acdc73f30379eef3324495ba86c4ff02b895d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037c432021ce54035b64154d7d66619c9cc1d647a623fc8fc266d6b5423394a8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4155cb7b2e2cc6ff5d350e08952c70b08841513dd0a7ea1cc9a36cc2d7917e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:27:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4155cb7b2e2cc6ff5d350e08952c70b08841513dd0a7ea1cc9a36cc2d7917e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a15376cb548b0307968dd5534f9b4c42824cb50853349b7b5f5587adff5b365. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea46e4c2c8f52ca7ef285b42d5cd9c70e190bd5ddfdbabb82034ddb76dc58565. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971a792e2e6e561321be599b271508c6e56427b807f4f534ca6dd1714645411c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:51:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037c432021ce54035b64154d7d66619c9cc1d647a623fc8fc266d6b5423394a8. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8463452f4a4283b306c7d262eca94417f988d744b94487de9aba4919c9365a1f. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BX2Z72400005.